Date: Wed, 06 Jun 2001 20:15:17 Subject: Suppliers of "no screen" film for Crystallography?? From: L. Cranswick [lachlan@ldeo.columbia.edu] Lamont-Doherty Earth Observatory, Columbia University Newsgroups: sci.techniques.xtallography Does anyone have a list of available brands and suppliers of "no-screen" Crystallographic X-ray film for Gandolfi, Precession and Weissenberg applications (single side and double side film if available) Does AGFA still produce anything? (I've been told that Kodak is going to stop production of their "no-screen" film in the near future - so alternatives may have to be sourced?) Thanks in advance, Lachlan. Lachlan M. D. Cranswick Geochemistry - Lamont-Doherty Earth Observatory, Columbia University PO Box 1000, 61 Route 9W Palisades, New York 10964-1000 USA Tel: (845) 365-8662 E-mail: lachlan@ldeo.columbia.edu Fax: (845) 365-8155 WWW: http://www.ldeo.columbia.edu/~lachlan/ CCP14 Xtal Software Website: http://www.ccp14.ac.uk |
From Mark BowdenDate: Thu, 07 Jun 2001 00:53:59 Subject: Re: Suppliers of "no screen" film for Crystallography?? From: Mark Bowden [m.bowden@spamblock.irl.cri.nz] at ComNet Networks, Industrial Research Limited, New Zealand Newsgroups: sci.techniques.xtallography We have been using Agfa "Structurix D7" double sided film for a while without any major problems. I guess a supplier outside New Zealand would be more convenient for you... Mark Bowden Ceramics Team Industrial Research New Zealand |
From Miguel GregorkiewitzFrom gregor@unisi.it Fri Jun 15 16:25:49 2001 Date: Fri, 15 Jun 2001 17:28:28 +0200 Subject: Re: STX: Suppliers of "no screen" film for Crystallographic X-ray work??? To: Lachlan Cranswick
From Miguel GregorkiewitzFrom: gregor@unisi.it Date: Tue, 26 Jun 2001 08:57:24 +0200 Subject: film material To: l.m.d.cranswick@dl.ac.uk dear Lachlan, the bad news is that CEAverken indeed has closed its production of photographic material. Agfa is continuing with Structurix D7 and D8, the latter being faster by a factor of 1.7 at the cost of lower resolution, but they couldn't specify me at what level, I think resolution may be sufficient for most X-ray crystallographic work. Unfortunately, however, D8 comes only in ugly formats like 30*40 cm2 or larger. best Miguel Miguel Gregorkiewitz Dip Scienze Terra, Università via Laterina 8, I-53100 Siena, Europe fon +39'0577'233810 fax 233938 e-mail gregor@unisi.it
From Miguel GregorkiewitzFrom: gregor@unisi.it Date: Wed, 27 Jun 2001 18:41:46 +0200 Subject: references To: lachlan@ldeo.columbia.edu Hi Lachlan, here go the missing references. #1 and #2 are to Nguyen's program for Debye-Scherrer film digitalization, #3 to my paper on the interpretation of Gandolfi patterns regarding the missing reflections, and #4 to the IUCr report on about 20 different film materials: JH Nguyen, R Jeanloz. A computer program to analyze x-ray diffraction films. Rev Sci Instrum (1993) 64:3456-3461. B O'Neill, JH Nguyen, R Jeanloz. Rapid computer analysis of X-ray diffraction films. Amer Mineral (1993) 78:1332-1335. M Gregorkiewitz. Geometrical limits and improvement of the diffraction optics in Gandolfi cameras. J Appl Cryst (1994) 27:855- 859. SC Dawson, M Elder, OS Mills (on behalf of the Commission on Crystallographic Apparatus of Int Union Crystallogr). A survey of X- ray film characteristics. ~1986 As far as I know, Nguyens program is the only code which accounts for azimuthal alignment and ellipse fitting, although something in this direction has also been done at ESRF (Pulford et al, ESRF Report 1994/5, p.79). ************* The IUCr report has probably never been published, so I just send you a copy of this and all the staff I put together some years ago when I was interested in an optimized Gandolfi attachment. You will also find a brochure referring to such attachment as realized by a small manufacturer in Spain, the device works quite well but I don't know if they are still interested to fabricate it. Cheers Miguel Miguel Gregorkiewitz Dip Scienze Terra, Università via Laterina 8, I-53100 Siena, Europe fon +39'0577'233810 fax 233938 e-mail gregor@unisi.it |
Date: 15 Aug 2001 11:00:43 Subject: Suppliers of "no screen" film for Crystallo No responses From: Pieter Kuiper [piku@itn.hh.se] Lund Institute of Technology, Sweden Newsgroups: sci.techniques.xtallography I am looking for x-ray film for a course lab. We currently use Kodak X-OMAT in "easy-pack" envelopes (obtained from PhyWe). Another option would be buying a Polaroid cassette and using the 3000 ASA film. I also saw that Leybold has filmpacks that do not require a dark room. http://www.leybold-didactic.com/ga/Produkte_Allgemeinbildung_bis_6x/5/554/554892/554892e.pdf Does anybody know how the x-ray sensitivities of these films compare? (our copper-anode source operates att 25 kV) Would it be a good idea to use a system with a fluorescent screen? Recording Debye-Scherrer diffraction takes 6 hours, so reducing the exposure time is desirable, and our resolution is poor anyway. Any suggestions? PS: I am interested in second hand x-ray apparatus for our course lab. So if somebody has outdated equipment (photographic detection, low resolution) gathering dust in the basement, I might like to come by if it is in Northern Europe. -- Pieter.Kuiper@msi.vxu.se http://www.msi.vxu.se/~pku/ |
Date: Mon, 31 Mar 2003 22:00:22 Newsgroups: sci.techniques.xtallography Subject: X-ray film for Gandolphi Camera work From: Rondi Davies [rdavies@amnh.org] Greetings, I am trying to locate a new type of X-ray film and supplier in the US (east coast) for Gandolphi Camera work. We have been using Kodak direct exposure film however they are no longer making it. I have heard that Agfa Structurix D7 film is a possibile repacement however I am unable to locate a supplier here in the US. Any information about film and sources is most appreciated. Rondi
Date: Mon, 31 Mar 2003 22:34:12 Newsgroups: sci.techniques.xtallography Subject: Re: X-ray film for Gandolphi Camera work From: Bev Vincent [MaxDevore@hotmail.com] at Molecular Structures Corporation(msc.com "Rondi Davies" [rdavies@amnh.org] wrote in message news:3E88AC66.1070409@amnh.org... > Greetings, > I am trying to locate a new type of X-ray film and supplier in the US > (east coast) for Gandolphi Camera work. We have been using Kodak direct > exposure film however they are no longer making it. I have heard that > Agfa Structurix D7 film is a possibile repacement however I am unable to > locate a supplier here in the US. Any information about film and sources > is most appreciated. I can't vouch for the company or whether the film is exactly what you need, but you can by AGFA Structurix D7 in different formats here: https://trorderonline.thomasregister.com/TrooFrame.tpl?&Origin=VURL&NoCache= 1049146305&AZNumber=64498009&CatalogID=2975&SupplierID=3556&PHID=49968&PHLas t=30&ItemCount=387&PHName=Film%3A%20X-Ray&AlphaStart=1&ItemViewStart=1&Spine =Spine.tpl&Navigation=ItemNav.tpl&BuyerSelection=ViewItems.tpl&RequestClass= ViewItems&RequestMethod=itemSearch If that link is too long, try https://trorderonline.thomasregister.com/TrooFrame.tpl?Origin=VURL&AZNumber=64498009 then click on "Film: X-Ray (387)" -- Bev Vincent www.RigakuMSC.com
Date: Fri, 02 May 2003 16:29:57 -0400 Subject: Film for Gandolfi Colleagues, We have now accomplished the first test using Fuji IX150 X-ray Film for Gandolfi work. Was able to cut 4.5x17 inch sheets into 3 films for standard cylinder (360x35mm) and get a reasonable pattern with this fine grain film. Next, we have to test it in comparison to an equivalent exposure of Kodak DEF to see how much longer exposures might have to be. Cheers, George ------------------------------------------------------------------ George E. Harlow, Ph. D. gharlow@amnh.org Dept. Earth and Planetary Sciences, Division of Physical Sciences, A.M.N.H. Central Park West at 79th St., NY, NY 10024-5192 U.S.A. Phone (212)769-5378 FAX (212)769-5339
Date: Tue, 05 Aug 2003 08:51:56 -0400 To: "L. Cranswick" [lzc@dl.ac.uk] Subject: Re: Summary on X-ray film? Cc: lachlan.cranswick@nrc.gc.ca Lachlan, We have only tried the Fuji so far. It is much slower than Kodak NS was, perhaps between 25 and 50%; our exposures are running over 8 hours rather than ~ 3. For Gandolfi it also requires cutting strips of ~35 mm from the sheet stock. I will be making a jig to make that reproducible on a large paper cutter. The IX150 I bought as 4.5x17 inches for $171; the Agfa D8 is available for $118 for the same size and amount. Both from www.henkenind.com (Texas). Cheers, George |